Drawing an arc at an unknown angle to the vertical

[Anonymous]

This is probably a very basic question (sorry), but I'm new to AutoCAD and can't seem to find a solution. Essentially I'm trying to create an arc between two points on the X-Y plane and a point above (not directly above) in the Z direction.

Is there any way I can get an arc to snap between these three points? I guess I could calculate the angle of the plane this arc would lie on and then rotate the UCS to this angle, but this seems like a very long and inaccurate way of doing it. I've tried drawing an arc on the X-Y plane and then stretching the centre of it to the desired point above using the grips, but AutoCAD doesn't seem to want to allow this.

[Alfred.NESWADBA · Accepted solution]

Hi,

>> I guess I could calculate the angle of the plane this arc would lie on and then rotate the UCS to this angle

..or define it by these 3 points (command _UCS option _3P)

>> but this seems like a very long and inaccurate way of doing it

No, look that:

- alfred -

[Anonymous]

Thanks!

Feel quite silly now 😛